Module MAIN is undefined in IML; cannot be RUN.
怎么回事呢   求大神指点

proc iml;
use resdat.class;
read all into x;
print x;
run;
filename out 'd:\user.txt';
file out;
do i=1 to nrow(x);
  do j=1 to ncol(x);
  put @(x[i,j]) 1.0+2@;
  end;
  put;
  end;
  closefile out;
  run;